Radio

Radio is a technology and medium that uses electromagnetic waves to transmit audio content over distances without the need for physical connections. It typically involves the broadcasting of sound, including music, news, talk shows, and other audio programming, to a wide audience. Radio signals are generated by a transmitter and received by radios, which convert the signals into sound. The technology operates in various frequency bands and can be AM (Amplitude Modulation) or FM (Frequency Modulation), among other formats. Radio can also refer to the devices that receive and play these broadcasts. It plays a significant role in mass communication, entertainment, and information dissemination.